Cleaning up your tract

Article Abstract:

UK landowners are having to clean up industrially-contaminated land as demand for development sites grows, with clean-up processes employed including the use of microbes, vacuum extraction, excavation and dumping, encapsulation and destruction. Over 800 million pounds sterling will be spent by the year 2000 on cleaning-up contaminated land, with about 360 million pounds sterling to be spent in 1993. Over 27,000 hectares are thought to be contaminated by industrial substances such as polychlorinated biphenyls (PCBs), asbestos and acids. Motives behind the growth in site clean-ups include liability and profit.

United Kingdom, Pollution control industry, Pollution, Control, Liability for condition and use of land

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Hidden strengths

Article Abstract:

The recession in the construction industry has affected the business of steel lintel manufacturers and they are adapting to a customer led market. Some manufacturers have been taken over and the six largest companies are introducing more customer services as well as being prepared to supply lintels to customer specifications. Although lintel design has not changed, there are several methods of corrosion protection and insulation now available. Other developments include the use of stainless steel and a reduction in the use of welded sections.

Supply and demand, Steel industry, Steel, Structural, Structural steel, Girders, Beams (Structural)

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Shake and rattle roll

Article Abstract:

Ride comfort has now become a key element in lift design, and lift manufacturers are under great pressure to provide a smooth ride. Noise in the lift car must be kept to a minimum, and the car must not move from front to back or side to side or shake in any way. Manufacturers now measure lift performance using sophisticated electronic equipment.

Design and construction, Elevators

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